My Feedback.
Okay firstly I'd like to start that this is my review of your setup and after testing it i think theres lots more work to be done.
Your setup was very....how should I say it, extreme. Since it says its a road setup I figured that it would work at Nurburgring so that's where I tested it. Honestly nearly everywhere I drove, it felt that it was either going to slide of the track or simply lose control. Especially on the fast sections where you can reach over 300kph (around 180-90mph i think). During these areas it was way too loose for my liking. On my first run I spun out because of simply turning a little bit around a banking corner. I think the main reason for this is because you spring rate was WAY TOO SOFT, for the ride height it was rolling on. I know I stiffened it up more and certainly it fixed this problem a bit. Oh and your ride height you've posted...if you have the front higher than the back it basically makes the car FLY! If you switch your ride height numbers around it did help a bit a solving some problems but then again I didn't want to change much as this is your setup.
So as far its handling concerned, you posted that it handles very well...well not on Nurburgring, certainly not. You might need to do some testing there on resolving some issues if this is a road setup.
Next i'd like to talk about is your gearing. Now this might just be me but your ratio's was too close and I had to shift up and down lots. It gets very annoying having to shift alot and tiring. I kinda solved this in a very quick method of moving the Auto Set from 16 to 18. I'm sure if you change it to that you'll not only have to shift less but also the car feels much more smoother and poised when accelerating. Plus because of this the car basically accelerates as fast as before really so that's also good. Remember if you do decide on fixing your transmission to try and also set each gear from 1-6 manually. Make it so that the car doesn't have any blind spots in the gears.
Another thing I don't understand is why you have TCS while having a LSD on. If you have TCS while having a LSD on, all it does is slow the car down and thats not good. I turned TCS off and fiddles with the LSD a bit so that it don't spin as much in the early gears and from there I didn't need to drive with TCS anymore. Only put TCS if your really desperate for control of a car really.
Thats the stuff I really didn't like about the car. But your brakes seem to be setup fine as it biased to the front so I like that. It helped keep the car stable underbraking with your original setup but the 300ZX surely needed extra stability so i suggest if you want, to up the LSD on the deceleration side.
Thats was really the only good thing I liked about the car really. All the rest was scary and uncontrollable with a irratating TCS that did hardly anything but stop the wheels spinning at the 1st,2nd gears. You need much more work on this car as all I can say is, its not finished.
The 300ZX is one of my favorite cars of all time! By the way what do you mean by watanabe wheels 
Do you mean Ryo Watanabe, from Need For Speed Prostreet